A diminished seventh chord is a diminished triad (which has a root note, a minor third, and a diminished fifth) with a seventh interval added above the root:
◊ Diminished 7th
A Bdim7 has an added diminished seventh: B – D – F – A♭
◊ Half-Diminished 7th
A Bø has an added minor seventh: B – D – F – A
• (also called a “minor seventh flat five”)
◊ Diminished Major 7th
A B°M7 has a major seventh: B – D – F – A♯
♫ More Piano Chords:
Bmaj ▪ Bma7 ▪ Bma9 | Bmin ▪ Bm7 ▪ Bm9 | Bdim ▪ B°7 | Baug ▪ B+7 | Bsus2 ▪ Bsus4
■ Back to Master Chord Index
